[WWI] A lot of Gotha G.III questions

[Wolfram Oettel]

Hej,

I'm building the Roden Gotha G.III in the markings with the skull at the front of the fuselage. As a good reference I found a good clear picture of this plane at the web. 

http://www.thomasgenth.de/GothaG.IIISchaedel.jpg

But still more questions than answers!

1. What the hell is this round thing at the fuselage strut? 
2. Is there a wire mesh grid in the frame at the backgunners position? And I cannot see a similar frame at the oposite of the fuselage? 
3. What is that for a wind organ left of frontgunners place? (Not the signal cartridges on the skull!) 
4. What is round thing in the front window? 
5. What is this wire coming out of the center of the fuselage near the rear window?  
6. Further there are wires coming out of the upper wing, right in the middle between fuselage and engine nacelle. What are they for and where do they lead?

Thank's for participating on my questionaire!

My build http://www.modellboard.net/index.php?topic=17311.165

Regards
Wolfram
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